The Company of Biologists

Table 2.

Water content and urea concentration in Rana sylvatica organs after incubation with 80 mmol l⁻¹urea

	Water content (% fresh mass)	Urea concentration
	Water content (% fresh mass)		(μmol g⁻¹ dry tissue)	(mmol l⁻¹)
Heart	83.2±0.5^a	233.2±25.1^a,b	46.7±4.8^a
Liver	76.4±0.4^b	246.6±12.8^a,b	76.3±4.2^b
Kidney	81.2±0.1^c	299.3±27.2^a	69.6±6.6^b
Gastrocnemius	82.8±0.3^a	204.0±6.8^b	42.2±1.2^a

	Water content (% fresh mass)	Urea concentration
	Water content (% fresh mass)		(μmol g⁻¹ dry tissue)	(mmol l⁻¹)
Heart	83.2±0.5^a	233.2±25.1^a,b	46.7±4.8^a
Liver	76.4±0.4^b	246.6±12.8^a,b	76.3±4.2^b
Kidney	81.2±0.1^c	299.3±27.2^a	69.6±6.6^b
Gastrocnemius	82.8±0.3^a	204.0±6.8^b	42.2±1.2^a

Values are means ± s.e.m.; N=6 replicates per group.

Within each column, means identified by different letters are statistically different (ANOVA/Bonferroni; P<0.05).